Underfloor heating rcbo or fused rcb

Leelee · Dec 8, 2020

Hi all

fitting some underfloor heating and have easy access to consumer unit.

what’s peoples thoughts on connecting thermostat/ heating cable directly to an rcbo as opposed to using an mcb with a switched fused spur for over current protection?

Leelee · Dec 8, 2020

Apologies. Title should say “rcd” with fused spur.... think you’ll have guessed what I meant

Murdoch · Dec 8, 2020

That would rather depend on the MIs as most rcbos are single pole.

If it was me I would still have local DP isolation

Leelee · Dec 8, 2020

Murdoch said:
That would rather depend on the MIs as most rcbos are single pole.

If it was me I would still have local DP isolation

Are you referring to the cable type?

Murdoch · Dec 8, 2020

Leelee said:
Are you referring to the cable type?

MI = manufacturers instructions

Leelee · Dec 9, 2020

Ah I got ya. In my head I had mineral insulated which confused the hell outta me.

It’ll be MCB- fused rcd- thermostat- heat mat then.

Murdoch · Dec 9, 2020

Leelee said:
It’ll be MCB- fused rcd- thermostat- heat mat then.

fused rcd?

Underfloor heating rcbo or fused rcb

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